Abstract--Radioactive tracer work demonstrated that dormant and germinated seeds of Citrus limon hydrolysed
nomilin 17-fl-D-glucopyranoside and liberated nomilin. The shoot portion of the germinated seeds also possessed this
enzyme activity. These findings show the presence of limonoid glucoside fl-glucosidase activity in lemon seeds. This is
the first study to establish the presence of such an enzyme in plant tissues.